Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Main Forums
Electrician Talk Forum
MVA to Ka - What device is acceptable?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Talk Electrician Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Kurt" data-source="post: 442979" data-attributes="member: 27355"><p>To convert VA to A , I generally divide by 700, although if using Tony's line voltage at 433 it would be 750. So 25MVA gives a fault current of 33.33KA.</p><p></p><p>You can get MCCBs at that level, I think Merlins would be 36KA standard, however although I have measured PSSC higher than 25KA with on site transformers its not very often.</p><p></p><p>As mentioned 25MVA is a little high and it may simply be a DNO fixed number for all installations rather than specifically this one.</p></blockquote><p></p>
[QUOTE="Kurt, post: 442979, member: 27355"] To convert VA to A , I generally divide by 700, although if using Tony's line voltage at 433 it would be 750. So 25MVA gives a fault current of 33.33KA. You can get MCCBs at that level, I think Merlins would be 36KA standard, however although I have measured PSSC higher than 25KA with on site transformers its not very often. As mentioned 25MVA is a little high and it may simply be a DNO fixed number for all installations rather than specifically this one. [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Electrician Talk Forum
MVA to Ka - What device is acceptable?
Top